Sthenelais boa prefers fine-grained sediments with a median grain size of 150 to 250 μm. The species is nevertheless also found in finer and coarser sediments (up to 500 μm). Preference is given to sediments that are to some extent enriched with mud (maximum 40%). The highest relative occurrence (60%) is reached in sediments with a mud content of 10-20%.
Degraer, S.; Wittoeck, J.; Appeltans, W.; Cooreman, K.; Deprez, T.; Hillewaert, H.; Hostens, K.; Mees, J.; Vanden Berghe, E.; Vincx, M. (2006). The macrobenthos atlas of the Belgian part of the North Sea. Belgian Science Policy. D/2005/1191/3. ISBN 90-810081-6-1. 164 pp. (look up in IMIS)